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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/219

Authors: PREDA, Ion
CIOLAN, Gheorghe
CRISTEA, Dumitru
LEFTER, Emilian
Keywords: pull-belt CVT
actuation system
dynamic model
Issue Date: Nov-2011
Publisher: University of Pitesti
Series/Report no.: CAR2011;1236
Abstract: The continuous variable transmissions (CVT’s) permit to obtain any value of the transmission ratio between two limits. The continuous variation of the transmission ratio can be used to permanently adapt the engine functioning to the actual vehicle's movement conditions, promising important fuel efficiency increase and lower pollutant and CO2 emissions. On the other hand, this type of transmission is not an automatic one by its working principle, which means a change of the vehicle's road load will not automatically adapt the transmission ratio. Due to that inconvenient, extended researches are made today to improve the performances of the CVT’s hydraulic or electric actuation systems, controlled both by mechanical and electronic devices. The CVT's model presented in this paper was designed to represent the base for the study of different controlling algorithms' performances. The authors' intention is to include the CVT's control level in another higher control system of a hybrid propulsion system. Finally, some simulation results are also presented.
URI: http://hdl.handle.net/123456789/219
ISSN: 1455-1100
Appears in Collections:Research Papers (Automotive & Transport Engineering)

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